Description 18650 lithium polymer battery charger TP4056 main controlled constant current charging safe reliable highest voltage limit 4 2V For no protection board battery No reverse polarity protection Does not require 220V AC access safe and reliable Only require a 5V charger and MINI USB cable access LED indication red for charging green for fully charged Size 96 x 21mm L x W Charging cable does not include 0 3A 0 5A 0 8A third gear current remove the resistance to change the currentNote When using it please insert the battery before charging so that it can avoid instant impact and protect itPackage included 1 x Charging holder